Speed optimization of a WordPress site

One of the most important goals of a site creator is to build a website that will appear to the visitor in the shortest possible time (minimum response time).

Based on our technical infrastructure, all necessary actions have been taken to achieve the above. Based on this, the page administrator must exploit the server resources to the maximum extent so as to achieve even faster page loading.
If your site is built with WordPress, follow the steps below:

1. Upgrade to the version of PHP

The latest versions of PHP use caching technologies and in general can better manage system resources. By using these, you can achieve an increase in speed.

2. Enable cache

In a shared hosting environment, A and Z is caching in terms of page speed. To enable caching, you can install in simple steps W3 Total Cache which is a free plugin provided by the same WordPress community.

3. Photo volume reduction

Reducing the volume (size) of a site has a direct impact on its loading time. Two simple steps to achieve the above is to delete photos that you don't need or modify them to have the correct format such as JPG, PNG, GIF. To accomplish the above, you can activate the WP Smush plugin.

4. CSS and Javascript Compression

To achieve even faster loading of a site, you should clean up the tags from the footers and headers of CSS and JavaScript files. You can use the Head Cleaner plugin to perform the above action.

5. Enable Defer parsing of JavaScript

Asynchronous loading of javascripts is particularly important to achieve even faster loading of a site. This action can be done through a plugin such as WP Deferred JavaScripts.
6. Checking your code via performance plugin

One of the most important development plugins provided by the WordPress community is P3 which checks your plugins and sends you a report with both load times and other performance tips, based on which you can configure your website to improve its response time.

7. Enable CDN

The use of Content Delivery Network (CDN) technologies helps in loading your website's information from multiple different servers. As a result, not only is the response time reduced, but the load caused on the server per visitor is also decreased. This means that with the above action, you achieve both a fast website and an increase in the traffic limits that a hosting package can handle at any given moment. 

8. Checking the website by GTmetrix and PageSpeed:

Finally, there are sites that calculate the loading speed of your site and with reports and graphs advise you on what you should do for immediate optimization.

Some of the most popular, is GTmetrix, you just specify the domain name and by clicking on Analyze, you get the optimization reports...
...and Google's PageSpeed, which you select Run Insights, declare your site and click Analyze.